| Cite this article: | 司瑞,刘冰,朱钊岑,等.西北干旱区甜高粱种植较优水肥配比模式研究[J].灌溉排水学报,0,():-. |
| si rui,liu bing,zhu zhao cen,et al.西北干旱区甜高粱种植较优水肥配比模式研究[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 1936Times Download 0Times |
|
|
|
| DOI： |
|
| Study on Optimal Water and Fertilizer Proportioning Model of Sweet Sorghum Planting in Arid Area of Northwest China |
|
si rui, liu bing, zhu zhao cen, liu chan, zhao ying
|
|
Linze Inland River Basin Research Station,Chinese Ecosystem Network Research,Key Laboratory of Ecohydrology of Inland River Basin,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences
|
| Abstract: |
| 【Objective】Under the premise of high yield, water and fertilizer saving, and high economic benefits, a better water and fertilizer ratio model suitable for sweet sorghum planting in arid regions of Northwest China is discussed. 【Method】Taking the oasis area on the edge of the Hexi Corridor as a research area, through random block experiments of farmland plots, a total of 9 types of water and fertilizer combinations based on the three irrigation gradients and 3 fertilization gradients were used to analyze the agronomic characteristics of sweet sorghum in different water and fertilizer treatment modes. The effects of dry weight of biomass, water and fertilizer utilization efficiency and economic benefits are discussed. 【Result】1) In the oasis area on the edge of the Hexi Corridor, the amount of irrigation had no significant effect on the plant height, stem thickness, and biomass dry weight of sweet sorghum, but the amount of fertilizer applied had significant effects on the above indicators, and the interaction between water and fertilizer on plant height and Biomass dry weight has a significant effect; 2) Plant height, stem diameter, biomass dry weight, and irrigation water productivity are the highest under the treatment of 6 000 m3.hm-2 and fertilizer application of 750 kg.hm-2 (333.11 cm, 29.35 t.hm-2, 22.63 mm, and 3.80 kg.m-3), which are 20.10%, 7.37%, 27.33%, and 48.43% higher than their averages, respectively; 3) Both pure sorghum net income and water-saving benefits The highest irrigation amount of 6 000 m3hm-2 (1 1720.42 Yuan.hm-2 and 1 451.32 Yuan.hm-2), which are 14.37% and 35.10% higher than their average values, respectively; 4) In addition, plant height, stem thickness, internode number, leaf number, leaf dry weight, stem dry weight, ear dry weight and juice yield are positively related to biomass dry weight, and stem thickness, plant height, leaf number and stem The contribution of dry straw weight to biomass dry weight is higher than other agronomic traits. 【Conclusion】The irrigation amount is 6 000 m3.hm-2, and the fertilization amount is 750 kg.hm-2. Next, plant height, stem diameter, dry biomass and irrigation water productivity were significantly higher than other fertilizer treatments, it can be planted as a scientific model of water and fertilizer ratio of sweet sorghum northwest arid area. At the same time, attention should be paid to the cultivation of stem thickness, plant height, leaf number and stem dry weight, and coordination of other agronomic traits to promote the improvement of sweet sorghum biomass. |
| Key words: Sweet sorghum; Agronomic traits; Biomass dry weight; Irrigation water productivity; Partial fertilizer productivity; Water saving benefits |
|
|
|
|
|
|
